Nice to see a pen posted by someone you've met! [
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I've made many El Grandes/Ligeros. And I tried some bulges, on customer request. So definitely there are people that like even a fat El Grande or Ligero! My personal preference though is dead straight... the cap is square, the fairly wide centerband is straight. Generally I like the wood to flow into the components at the angle of the components. Therefore this pen needs to be straight for me.
That goes for the main body also. Looks like you gave it some shape. Once the cap is traight, the body looks best straight also. You definitely don't want the little concave that you seem to have in the upper body (unless I am looking at a photo effect)
Nice photos btw! Oh, and if you put a refill into it, it writes much better <ducking>